Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
  • A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
  • A61K8/89—Polysiloxanes
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
  • A61K8/0241—Containing particulates characterized by their shape and/or structure
  • A61K8/0275—Containing agglomerated particulates
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/58—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing atoms other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur or phosphorus
  • A61K8/585—Organosilicon compounds
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q19/00—Preparations for care of the skin
  • A61Q19/10—Washing or bathing preparations
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
  • A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
  • A61K2800/41—Particular ingredients further characterized by their size
  • A61K2800/412—Microsized, i.e. having sizes between 0.1 and 100 microns
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
  • A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
  • A61K2800/54—Polymers characterized by specific structures/properties
  • A61K2800/542—Polymers characterized by specific structures/properties characterized by the charge
  • A61K2800/5426—Polymers characterized by specific structures/properties characterized by the charge cationic

Definitions

• the present invention relates to detergent compositions suitable for topical application for cleansing and improving the condition of the human body, particularly for moisturising the skin, hair, nails and other epithelial tissues, including the mucosae.
• compositions which are formulated to give mild cleansing and conditioning of the skin, and improved deposition of benefit agents.
• compositions formulated to cleanse the skin are well known. It is also known to formulate products which provide both a cleansing and a moisturising benefit.
• WO 90/13283 discloses a composition comprising an acyl ester of an isethionic acid salt, a long chain fatty acid, a moisturiser component and, optionally, soap.
• WO 95/22311 discloses a composition containing a surfactant, a benefit agent and a cationic deposition polymer.
• compositions such that they can deliver effective moisturising, conditioning and/or protection of the skin, and also a way of delivering benefit agents in a more efficient manner.
• an aqueous liquid cleansing and moisturising composition comprising:-
• compositions according to the invention are preferably shear thinning.
• compositions according to the present invention are that they lead to improved deposition of benefit agents from a surfactant-containing aqueous liquid composition during use.
• compositions according to the invention that particles of the skin benefit agent form aggregates which comprise a number of individual particles.
• aggregates which characterise compositions according to the invention comprise 5-5000 individual particles of benefit agent.
• compositions which comprise these aggregated particles which aggregated particles stay in this form and do not coalesce, serve to deliver to the substrate relatively large aggregates of benefit agent, which provides an effective local high concentration of the benefit agent, thus enhancing the moisturising benefit to the substrate, and also the overall efficiency of delivery of the benefit agent.
• compositions according to the invention may typically comprise relatively high populations of relatively large, aggregated particles.
• Compositions according to the invention may therefore for example have a mean individual particle size of less than 5 ⁇ m (5 microns), typically less than 1 ⁇ m (1 micron), but contain about 50% or less by weight of the benefit agent in the composition in particles less than 3 ⁇ m (3 microns) in size.
• the composition may also comprise less than 10% by weight of the benefit agent in aggregated particles of greater than 80 ⁇ m (80 microns) in size.
• Compositions according to the invention typically have more than 3% by weight of the benefit agent in aggregated particles with sizes in the range 3-80 ⁇ m (3-80 microns).
• compositions according to the invention also characteristically retain the aggregated microstructure during dilution in use, for example when diluted by a factor of 10 with distilled water. As such, compositions which have been diluted at ratios between 1:1 and 1:100 with water have been found also to retain the microstructure.
• compositions according to the invention containing the aggregated particles described preferably contain not only relatively high levels of benefit agent, cationic polymer, and contain aggregated particles of benefit agent, but may conveniently also be made according to preferred process aspects.
• the cationic polymer used in compositions according to the invention is at least partially hydrated when it is dispersed in the aqueous vehicle. If the cationic polymer is insufficiently hydrated, this may lead to insufficient aggregation of the droplets of benefit agent in the composition, whilst if the Cationic polymer in overly hydrated, in particular during its dispersion in the composition, it may prove difficult to disperse satisfactorily.
• composition according to the invention is suitable for cleansing and "moisturising", “conditioning” or “protection” of the skin.
• the benefit agent is included in the composition to moisturise, condition and/or protect the akin.
• “benefit agent” is meant a substance that softens the skin (stratum corneum) and keeps it soft by retarding the decrease of its water content and/or protects the skin.
• the benefit agent may be incorporated in the compositions of the invention in a carrier.
• the carrier could itself be a benefit agent, such as an oil.
• Such benefit agents include lipids; alkyl lactates; sunscreens; esters such as isopropyl palmitate and isopropyl myristate; and vitamins.
• the carrier can, for example, be a silicone or hydrocarbon oil which is not solubilised/micellised by the surface active phase and in which the benefit agent is relatively soluble.
• the benefit agent is preferably present in an amount of from 1.0 to 50 wt%, most preferably from 4 to 25 wt% of the composition, more preferably 5-15%, even more preferably 5-10% by weight of the composition.
• composition according to the invention is that, during use, it deposits benefit agent onto the skin at a level which results in a perceivable benefit.
• the surface active agent can be selected from any known surfactant suitable for topical application to the human body. Mild surfactants, i.e. surfactants which do not damage the stratum corneum, the outer layer of skin, are particularly preferred. Because of their lathering properties, anionic surfactants are highly preferred components of compositions according to the invention. Where the composition contains an anionic surfactant, it is preferable that the composition also contains a co-surfactant, which can be a nonionic, cationic or zwitterionic surfactant.
• One preferred anionic detergent is fatty acyl isethionate of formula: RCO 2 CH 2 CH 2 SO 3 M where R is an alkyl or alkenyl group of 7 to 21 carbon atoms and M is a solubilising cation such as sodium, potassium, ammonium or substituted ammonium.
• RCO 2 CH 2 CH 2 SO 3 M where R is an alkyl or alkenyl group of 7 to 21 carbon atoms and M is a solubilising cation such as sodium, potassium, ammonium or substituted ammonium.
• RCO 2 CH 2 CH 2 SO 3 M is an alkyl or alkenyl group of 7 to 21 carbon atoms and M is a solubilising cation such as sodium, potassium, ammonium or substituted ammonium.
• Preferably at least three quarters of the RCO groups have 12 to 18 carbon atoms and may be derived from coconut, palm or a coconut/palm blend.
• alkyl ether sulphate of formula: RO(CH 2 CH 2 O) n SO 3 M where R is an alkyl group of 8 to 22 carbon atoms, n ranges from 0.5 to 10 especially from 1.5 to 8, and M is a solubilising cation as before.
• anionic detergents include alkyl glyceryl ether sulphate, sulphosuccinates, taurates, sarcosinates, sulphoacetates, alkyl phosphate, alkyl phosphate esters and acyl lactylate, alkyl glutamates and mixtures thereof.
• Sulphosuccinates may be monoalkyl sulphosuccinates having the formula: R 5 O 2 CCH 2 CH(SO 3 M)CO 2 M; and amido-MEA sulphosuccinates of the formula: R 5 CONHCH 2 CH 2 O 2 CCH 2 CH(SO 3 M)CO 2 M; wherein R 5 ranges from C 8 -C 20 alkyl, preferably C 12 -C 15 alkyl and M is a solubilising cation.
• compositions include opacifiers, preferably 0.2 to 2.0 wt%; preservatives, preferably 0.2 to 2.0 wt% and perfumes, preferably 0.5 to 2.0 wt%.

Applications Claiming Priority (3)

Publications (2)

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ID=10844269

Family Applications (1)

Country Status (19)

Families Citing this family (40)

Family Cites Families (24)

• 1998
  • 1998-12-15 GB GBGB9827614.0A patent/GB9827614D0/en not_active Ceased
• 1999
  • 1999-12-03 ES ES99958172T patent/ES2183629T3/es not_active Expired - Lifetime
  • 1999-12-03 WO PCT/EP1999/009588 patent/WO2000035416A1/en active IP Right Grant
  • 1999-12-03 PL PL350090A patent/PL197485B1/pl unknown
  • 1999-12-03 EP EP99958172A patent/EP1140007B1/en not_active Expired - Lifetime
  • 1999-12-03 ID IDW00200101271A patent/ID30045A/id unknown
  • 1999-12-03 KR KR1020017007353A patent/KR100576658B1/ko not_active IP Right Cessation
  • 1999-12-03 BR BR9916232-6A patent/BR9916232A/pt not_active Application Discontinuation
  • 1999-12-03 DE DE69902815T patent/DE69902815T2/de not_active Expired - Lifetime
  • 1999-12-03 CA CA002354772A patent/CA2354772C/en not_active Expired - Fee Related
  • 1999-12-03 JP JP2000587737A patent/JP4531262B2/ja not_active Expired - Fee Related
  • 1999-12-03 CZ CZ20012194A patent/CZ302598B6/cs not_active IP Right Cessation
  • 1999-12-03 CN CNB998160776A patent/CN1273108C/zh not_active Expired - Fee Related
  • 1999-12-03 HU HU0104764A patent/HU228032B1/hu not_active IP Right Cessation
  • 1999-12-03 RU RU2001119444/15A patent/RU2230548C2/ru not_active IP Right Cessation
  • 1999-12-03 AT AT99958172T patent/ATE223198T1/de not_active IP Right Cessation
  • 1999-12-03 AU AU15597/00A patent/AU747078B2/en not_active Ceased
  • 1999-12-13 US US09/459,486 patent/US6255264B1/en not_active Expired - Lifetime
• 2001
  • 2001-06-07 ZA ZA200104665A patent/ZA200104665B/en unknown

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